摘要
详细报道了以甲基丙烯酸三氟乙酯为氟改性剂,以二乙烯基苯为交联剂的氟丙树脂溶液聚合工艺;所得氟改性树脂清澈透明,通过红外光谱表征,确定该树脂已共聚为交联网状结构;以其为成膜物,制成的氟碳涂料具有常温自干特性,光泽高,硬度大,耐酸碱盐水等综合性能优异;热重分析表明该树脂起始热分解温度428℃,失重50%时的热分解温度为499.5℃,说明为耐高温漆,可以在400℃下长期使用;SEM电镜表明该树脂成膜性好,添加纳米二氧化钛后的白色漆膜具有细腻微凸结构,具有荷叶效应。
The solution polymerization process of fluorine-modified acrylic resin with trifluoroethyl methacrylate as fluorine modifier and divinylbenzene as crosslinking agent was reported in detail. The fluorine modified resin was clear and transparent. FT-IR showed that the resin had been copolymerized and was crosslinked structure. The fluorocarbon coating made of the resin has the property of self-drying at room temperature. Coating gloss, hardness, acid resistance, alkali resistance, salt water resistance and other comprehensive performance is excellent. Thermogravimetric analysis showed that the resin initial thermal decomposition temperature was 428 ℃. The thermal decomposition temperature was 499.5 ℃ when weightlessness was 50 %. The coating was proved to be high temperature resistant and can be used for a long time under 400 ℃. It can be seen from SEM that the resin has good filmforming property. The white coating film with nano-TiO_2 has a fine convex structure and has lotus leaf effect.
引文
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